* adding new conversion rules, setting the entire conversion map, and converting
 * URLs using these rules.</p>
 *
 * <p>The conversion is performed by iterating through the conversion map and applying
 * each replacement rule sequentially. The order of the rules in the map is preserved
 * during the conversion process.</p>
 *
 * <p>Example usage:</p>
 *
 * <pre>{@code
 * UrlConvertHelper helper = new UrlConvertHelper();

 * This service provides customized URL fetching strategies including sequential and random ordering
 * based on crawling configuration parameters.
 */
public class FessUrlQueueService extends OpenSearchUrlQueueService {

    private static final Logger logger = LogManager.getLogger(FessUrlQueueService.class);

    /** Configuration value for sequential URL processing order */